@import url('./tokens.css');

/* Fonts */
@import url('/assets/css/fonts.css');

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-body);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-display);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); letter-spacing: -0.04em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); letter-spacing: -0.03em; margin-top: var(--space-8); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); margin-top: var(--space-6); }
h4 { font-size: 1.25rem; font-weight: 600; }

p { margin-bottom: var(--space-4); }

a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}
a:hover {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--color-accent-cyan);
}

.mono { font-family: var(--font-family-mono); }
.text-muted { color: var(--color-text-muted); }
.text-secondary { color: var(--color-text-secondary); }

/* Layout Blocks */
.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.reading-container {
  width: 100%;
  max-width: var(--max-width-reading);
  margin: 0 auto;
}

/* Header & Nav */
.site-header {
  background-color: rgba(10, 10, 12, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--space-4) 0;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-family-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.logo-icon {
  color: var(--color-accent-cyan);
}
.logo:hover {
  text-decoration: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-6);
}
.main-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.main-nav a:hover, .main-nav a.active {
  color: var(--color-text-primary);
  text-decoration: none;
}
.main-nav a.active {
  box-shadow: 0 2px 0 0 var(--color-accent-cyan);
}

/* Hero Section */
.hero {
  padding: var(--space-16) 0;
  border-bottom: 1px solid var(--color-border-subtle);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}

.hero-content {
  max-width: 35rem;
}

.hero-visual {
  position: relative;
  width: 100%;
  height: 400px;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  /* Tech grid background */
  background-image:
    linear-gradient(var(--color-border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-subtle) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-display);
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent-orange);
  color: #fff;
}
.btn-primary:hover {
  background-color: var(--color-accent-orange-hover);
  text-decoration: none;
  box-shadow: 0 0 15px rgba(255, 74, 0, 0.4);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-accent-cyan);
  color: var(--color-accent-cyan);
}
.btn-outline:hover {
  background-color: rgba(0, 240, 255, 0.1);
  text-decoration: none;
}

/* Footer */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-12) 0 var(--space-6);
  background-color: var(--color-bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-heading {
  font-family: var(--font-family-display);
  font-size: 1rem;
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.footer-nav ul {
  list-style: none;
}
.footer-nav li {
  margin-bottom: var(--space-2);
}
.footer-nav a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}
.footer-nav a:hover {
  color: var(--color-accent-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--space-4);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* Components */
.card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}
.card:hover {
  border-color: var(--color-accent-cyan);
}

.tag {
  display: inline-block;
  font-family: var(--font-family-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-secondary);
  border-radius: var(--radius-sm);
  margin-right: var(--space-2);
}

/* Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-6) 0;
  font-family: var(--font-family-mono);
  font-size: 0.9rem;
}
.data-table th, .data-table td {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border-strong);
  text-align: left;
}
.data-table th {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  font-weight: 600;
}
.data-table tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Markdown Content Elements */
.content-area ul, .content-area ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}
.content-area li {
  margin-bottom: var(--space-2);
}
.content-area img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  margin: var(--space-6) 0;
}
.content-area blockquote {
  border-left: 4px solid var(--color-accent-cyan);
  padding-left: var(--space-4);
  margin: var(--space-6) 0;
  font-style: italic;
  color: var(--color-text-secondary);
}
.content-area code {
  font-family: var(--font-family-mono);
  background-color: var(--color-bg-tertiary);
  padding: 0.1em 0.3em;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
}
.content-area pre {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-strong);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-6) 0;
}
.content-area pre code {
  background-color: transparent;
  padding: 0;
  color: var(--color-accent-cyan);
}

/* Tool Interface Base */
.tool-interface {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-strong);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  margin: var(--space-8) 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.form-group {
  margin-bottom: var(--space-4);
}
.form-label {
  display: block;
  font-family: var(--font-family-mono);
  font-size: 0.85rem;
  margin-bottom: var(--space-2);
  color: var(--color-text-secondary);
}
.form-input {
  width: 100%;
  padding: var(--space-3);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text-primary);
  font-family: var(--font-family-mono);
  border-radius: var(--radius-md);
}
.form-input:focus {
  outline: none;
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 1px var(--color-accent-cyan);
}
.tool-result {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background-color: rgba(0, 240, 255, 0.05);
  border-left: 4px solid var(--color-accent-cyan);
}
.tool-result-value {
  font-family: var(--font-family-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent-cyan);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; /* Mobile nav would go here, simple for now */ }
}